Title:
METHOD FOR EXTRACTING 1,5-PENTANEDIAMINE FROM SOLUTION SYSTEM CONTAINING 1,5-PENTANEDIAMINE SALT
Document Type and Number:
WIPO Patent Application WO/2017/133242
Kind Code:
A1
Abstract:
Provided is a method for extracting a 1,5-pentanediamine from a solution system containing a 1,5-pentanediamine salt. The method comprising adding to the solution system an insoluble basic substance to form a solution system containing a free state 1,5-pentanediamine. The provided method has high applicability, is easy to use, and is environmentally-friendly, significantly lowering raw material costs and operating costs for the entire manufacturing process. The method achieves a high recovery rate for pentanediamine, and is more suitable for industrial-scale production.
Inventors:
LIU XIUCAI (CN)
DAI DUANFANG (CN)
QIN BINGBING (CN)
YANG CHEN (CN)
DAI DUANFANG (CN)
QIN BINGBING (CN)
YANG CHEN (CN)
Application Number:
PCT/CN2016/098303
Publication Date:
August 10, 2017
Filing Date:
September 07, 2016
Export Citation:
Assignee:
CATHAY R&D CENTER CO LTD (CN)
CATHAY IND BIOTECH LTD (KY)
CATHAY IND BIOTECH LTD (KY)
International Classes:
C07C211/09; C07C209/84; C12P13/00
Foreign References:
| CN101981202A | 2011-02-23 | |||
| JP2009131239A | 2009-06-18 | |||
| JP2009096796A | 2009-05-07 |
Other References:
GONG, TINGYUN: "Recent Advances in the Production and Application of 1,5-Diaminopentane", JOURNAL OF CHEMICAL INDUSTRY & ENGINEERING, vol. 34, no. 1, 1 February 2013 (2013-02-01), pages 55 - 58, XP055559580
Attorney, Agent or Firm:
BEIJING INTELLEGAL INTELLECTUAL PROPERTY AGENT LTD. (CN)
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